Patents by Inventor Vincenza Vitobello

Vincenza Vitobello has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Biologically pure culture of Saccharomyces cerevisiae
    Patent number: 4450238
    Abstract: The invention relates to a process for the production of the alpha-galactosidase enzyme by culturing yeasts of the Saccharomyces cerevisiae genus in a temperature range from 20.degree. C. to 40.degree. C.The invention also relates to a process for enzymic hydrolysis of raffinose by alpha-galactosidase from Saccharomyces cerevisiae. Such hydrolysis may take place with the yeast cells being present or also in the presence of enzymic extracts, both as such and enriched. An important advantage of the invention is the high alpha-galactosidasic activity of the selected microorganisms, together with the absence of any invertasic activity.
    Type: Grant
    Filed: November 5, 1982
    Date of Patent: May 22, 1984
    Assignee: E. N. I. Ente Nazionale Idrocarburi
    Inventors: Vincenza Vitobello, Paolo Branduzzi, Nadia Cimini
  • Process for producing the enzyme cholesterol esterase and for hydrolyzing cholesterol esters of fatty acids by using the enzyme itself
    Patent number: 4387163
    Abstract: The enzyme cholesterol esterase is produced by cultivating a strain of the Achromobacter delicatulus type, isolated from vegetable debris and identified by the symbol NRRL B-12115. Under the described culture conditions, the enzyme is exocellular and therefore does not require extraction from the cells.In addition, the micro-organism has a duplication time less than that of moulds and Actinomycetes. Cholesterol esters of fatty acids can be hydrolysed by adding them to the culture medium before inoculating the strain.
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: June 7, 1983
    Assignee: E.N.I. Ente Nazionale Idrocarburi
    Inventors: Pasquale Sacceddu, Vincenza Vitobello, Paolo Braduzzi, Nadia Cimini, Ludwig Degen
  • Hydrolysis of raffinose by alpha-galactoxidase
    Patent number: 4376167
    Abstract: The invention relates to a process for the production of the alpha-galactoxidase enzyme by culturing yeasts of the Saccharomyces cerevisiae genus in a temperature range from 20.degree. C. to 40.degree. C.The invention also relates to a process for enzymic hydrolysis of raffinose by alpha-galactoxidase from Saccharomyces cerevisiae. Such hydrolysis may take place with the yeast cells being present or also in the presence of enzymic extracts, both as such and enriched. An important advantage of the invention is the high alpha-galactoxidasic activity of the selected microorganisms, together with the absence of any invertasic activity.
    Type: Grant
    Filed: December 5, 1980
    Date of Patent: March 8, 1983
    Assignee: E.N.I. Ente Nazionale Idrocarburi
    Inventors: Vincenza Vitobello, Paolo Branduzzi, Nadia Cimini
  • Method for the microbiological conversion of steroids
    Patent number: 4273872
    Abstract: A method is disclosed for the microbiological transformation of steroids, especially cholesterol, by employing culture media which contain hydrocarbons rather than carbohydrates. Paraffinic hydrocarbons, particularly normal paraffins from 15 to 20 carbon atoms, are used as the only carbon and energy sources. SP2T (NRRL B-11, 112), SP3T bis (NRRL B-11, 113), SP5T (NRRL B-11, 114), SP7T/1 (NRRL B-11, 115), SP742XXA (NRRL B-11, 116), SP731RD (NRRL B-11, 117), and SP734D (NRRL B-11, 118) are bacterial strains which can be used to this purpose.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: June 16, 1981
    Assignee: Snamprogetti S.p.A.
    Inventors: Pasquale Zaffaroni, Vincenza Vitobello, Anna M. Gamalerio